You can determine the version of the DITA Open Toolkit from a command prompt.
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Open a command prompt or terminal session, and then change to the directory where the DITA Open Toolkit is installed.
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Issue the following command:
|**Linux or Mac OS X **| bin/dita -version | |Windows| bin\dita -version |
**Tip:** If you add the absolute path for the DITA-OT install-dir/bin directory to the PATH environment variable, you can run the dita command from any location on the file system.